Finding the Third Proportional to 3,408.75 and 7,171.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408.75 : 7,171.88 = 7,171.88 : x
2. Step 2: Convert to fraction form
   3,408.75/7,171.88 = 7,171.88/x
3. Step 3: Cross multiply
   3,408.75x = 7,171.88 × 7,171.88
4. Step 4: Simplify right side
   3,408.75x = 51,435,791.02
5. Step 5: Solve for x
   x = 51,435,791.02/3,408.75
6. Step 6: Final answer
   x = 15,089.34